Propeller.



' E. B. DESENBERG 8: E. S. PILSWORTH.

PROPBLLBR.

APPLICATION FILED $21 15, 1911.

Patented June 4, 1912.

2 SHEBTS-SHEET '1.

)nvenfons E. B. DESENBBRG & E. S. PILSWORTH.

PROPELLER.

APPLIOATION FILED SEPT.5, 1911.

1,028,333. Patented June 4,1912.

2 BHEBTS-SHEET 2.

EDWARD B. DESENBERG, OF

KALAMAZOO, AND EDWARD s. rILswon'rH, or BATTLE CREEK, MICHIGAN}PBOIYELLER.

' Specification of Letters Patent.

Patented June 4, 1912.

Application filed September 5, 1911. Serial No. 647,737.

To all whom it may concern Be 1t known that we, EDWARD B. DESEN- nnneand EDWARD S. PILSWORTH, a 'clt-lzen "of the United States and a subjectof the Kingdom of Great Britain, respectively, re-

siding at Kalamazoo, Michigan, and at Battle Creek, Michigan,respectively, have invented certain new and useful Improvements. inPropellers, of which the following is a specification.

ThlS invention relates to lmprovements in propellers.

The main objects of this invention are First, to provide animproved-propeller adapted for use in shallow water and in water filledwith water plants, logs, or other debris. Second, to provide an improvedpropeller having these advantages which is also adapted for use as asteering means. Third, to provide an improved propeller having theadvantages above enumerated,"

which is strong and durable in structure and not likely to be damaged inuse and one I which is easily manipulated. I

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

We accomplish the objects of our invention by'the'device'sand-meansdescribed in the following specification.

The invention is clearly defined and pointed out in the'claims.

A structure which is a preferred embodiment of our invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, in which:

Figure I is a detail vertical longitudinal section of a fiat bottomedboat shown in 0on ventional form, having our improved propeller appliedthereto, the propeller being shown in full lines in one position and indotted lines in a raised position. Fig. II is a detail view partially inhorizontal section taken on a line corresponding to line 22 of Fig. I.Fig. III is a detail view partially in vertical section taken on a linecorresponding to line 3-3 of Fig. I. Fig. IV

is a detail view partially in vertical section, taken on a linecorresponding to line 4-4 of Fig. I. Fig. V is a detail plan view,showing the tiller ropes 20 connected to the steering post arm 19. I v

In the drawing, similar reference characters refer to similar partsthroughout the several views,and the sectional views are taken lookingin the direction of the little arrows at the'ends of the section lines.

' Referring; to the drawing, the boat 1 is of the flat ottom type uponwhich our improved propeller is especially designed for use, that is, aboathaving a shallow draft and adapted for use in shallow water. 'Theengine 2 which is shown in conventional form, is mounted at the rear endof the boat. The propeller shaft is formed of sect-ions 3 and 4, thesection 3 being the crank shaft or engine shaft and is supported insuitable bearings to project through the rear end of the boat. Thepropeller 5 is mounted on the rear end of the section 4. The shaftsections.3 and 4 are connected by a universal joint, comprising the forkmembers 6 and 7 connected by the journal pin block 8 and the journalpins 9 and 10. The joint member 7 is provided with a socket 11 for theend 12 of the propeller section 4, thus providing a slip jointconnectionfor the section 4 to the universal joint.

The steering post 13 is provided with a :The ring 14 is provided withjournals 15 wh1ch are disposed horizontally and in alinement with thehorizontal axial center of-the shaft joint. The post is supported in asleeve16,the sleeve being provided with a flange 17.engaging theunderside ofthe boat and with a clamping nut 18 on its upper end. On theupper end of the post is a rearwardly projecting arm 19 to which thetiller ropes 20 are connected.

Under the propeller, we arrange a flat shoe 21 which is provided withforwardly projecting arms 22 mounted on the journals 15 on the sides ofthe member 14 of the. steering post; I Y

The bearing 23 for the rear end of the shaft section 4 is supported by abracket having arms 25 thereon, the arms being secured to the sides ofthe hearing by means of the screws 26. The bearing is connected by thelinks 27 to the journals 15 on the annular steering post member 14.

A chain 28 is provided by which the ropeller-may be adjustably suspendedrom the arm 19. The lower end of the chain of the bolt 30 which may beengaged with any desired link thereof. v

To assist in supporting the steering post, we provide an arm 30 whichpro ects through the rear end of the boat beneath the annular member 14of the post and is secured thereto by the pivot 31.

With the parts thus arranged, the propeller rides over weeds and thelike which are kept from fouling the propeller by means of the shoe 21and the shoe also rides over the logs or other debris, serving as aguard for the propeller, and in shallow water it rides on the bottompreventing the propeller from en aging with the bottom. The pro ellercan be easily swung to either side so t at it serves as a steeringmeans.

We have'illustrated and described our improved propeller in detail inthe form in which we have embodied the same. We are aware, however, thatconsiderable variation in structural details are possible withoutdeparting from our invention. lVe have not attempted to illustrate suchmodifications as they will undoubtedly be-readily understood by thoseskilled in the art to which this invention relates.

Having thus described our invention, what we claim as new and desire tosecure'by Letters Patent is:

1. The combination with a boat, of a' propeller; a propeller shaftcomprising an engine section and a propeller section; a universal jointconnecting said shaft sections, the propeller section being connected tosaid universal joint by a slip joint; a vertically disposed steeringpost having an annular member at its lower end embracing said universaljoint and having journals disposed in alinement wit-h the horizontalaxial center of said universal joint, the vertical axial center of saidjoint being in alinement with the said post; an arm on said boat towhich the under' side of said ring is pivotally secured, the pivot beingin axial alinement with the post; a shoe arranged below said ropeller,said shoe being provided with orwardly projecting arms mounted on saidjournals on said post member; a bearing for the rear end of saidpropeller section of said shaft; upwardly projecting arms on said shoeon which said bearing is mounted; links connecting said bearing to saidjournals on said post; an arm on the upper end of said post; and a chainconnected to said bearing supporting links and adjustably' connected tosaid post arm.

2. The combination with a boat, of a propeller; a propeller shaftcomprising an engine section and a propeller section; a universal jointconnecting said shaft sections. the propeller section being connected tosaid universal joint by a slip joint; a vertically disposed steeringpost having an annular member at its lower end embracing said universaljoint and having journals disposed in alinement with the horizontalaxial center of said universal joint, the vertical axial center of saidjoint being in alinement with the said post; a shoe arranged below saidpropeller, said shoe being provided with forwardly projecting armsmounted on said journals on said post member; a bearing for the rear endof said propeller section of said shaft; upwardly projecting arms onsaid shoe on which said bearing is mounted; links connecting saidbearing to said journals on said post; an arm on the upper end of saidpost; and a chain connected to said bearing support-ing links andadjustably connected to said post arm.

3. The combination with a boat, of a propeller; a propeller shaftcomprising an engine section and a propeller section; a universal jointconnecting said shaft sections, the propeller section being connected tosaid universal joint by a slip joint; a v rt'ically disposed steeringpost having an annular member at its lower end embracing said universaljoint and having journals disposed in alinement with the horizontalaxial center of said universal joint, the vertical axial center of saidjointbeing in alinement with the said post; an arm on said boat to whichthe under side of said ring is piyotally secured, the pivot being inaxial alinementwith the post; a shoe arranged below said propeller, saidshoe being provided with forwardly projecting arms mounted on saidjournals on said post member; a

bearing for the rear end of said propeller section of said shaft;upwardly projecting arms on said shoe on which said bearing is mounted;and links connecting said bearing to said journals on said post.

4. The combination with a boat, of a propeller; a' propeller shaftcomprising an engine section and a propeller section; a universal jointconnecting said shaft sections,

the propeller section being connected to said universal joint by a slipjoint; a vertically disposed steering post having an annular member atits lower end embracing said universal joint and having journalsdisposed in alinement with the horizontal axial center of said universaljoint, the vertical axial center of said joint being in alinement withthe said post za shoe arranged below said propeller, said shoe beingprovided with mounted on said journals on said 0st member; a bearing forthe rear end 0 said propeller section of said shaft; upwardly projectingarms on said shoe on which said bearing is mounted; and links connectingsaid bearing to said journals on said post.

5. The combination with a boat, of a propeller; a propeller shaftcomprising an engine section and a propeller section; a universal jointconnection for said shaft secforwardly projecting arms tions; avertically disposed steering post having an annular member at its lowerend embracing said universal joint and having journals disposed inalinement with the horizontal axial center of said universal joint, thevertical axial center of said joint being in alinement with the saidpost L a shoe arranged below saidv ropeller, said shoe being providedwith orwardly projecting arms mounted on said journals on said postmember; a bearing for the rear end of'said propeller section of saidshaft carried by said shoe; an arm on the upper end of said post; and achain adjustably connecting said shoe to said arm.

6. The combination with a boat, of a propeller; a propeller shaftcomprising an engine section and a propeller section; a uni- -versaljoint connection for said shaft sec- 20 tions; a vertically disposedsteering post having an annular member at its lower end embracing saiduniversal joint and having journals disposed in alinement with thehorizontal axial. center of said universal joint, the vertical axialcenter of said joint being in alinement with the said post; a shoearranged below said propeller, said shoe being provided with forwardlyprojecting arms mounted .on said journals on said post member; and abearing for the rear end of said propeller section of said shaft carriedby sald shoe.

' In witness whereof, we have hereunto set our hands and seals in thepresence of two witnesses. v

EDWARD B. DESENBERG. [L. 8.] EDWARDS. PILSWORTH- [L- 8 Witnesses:

. Bunnrr'r HAMILTON,

WAL'rnR PAYNE.

